The Galaxy S8 comes out tomorrow, and if you’re a Sprint customer looking to pick up Samsung’s latest smartphone, then you might want to check out the carrier’s latest limited time deal, which lets customers lease two S8 phones for the cost of one.

There are, of course, some caveats to that deal: customers, whether new to Sprint or already subscribers, will have to activate a new line to be eligible for the offer. Both phones have to be rented from Sprint for a total price $31.25 month, so if you want to pay for the entire phone upfront you won’t be able to get the free one. And the deal itself is only valid from April 21st until April 27th.